A receiver as you have mentioned, sends all frequencies below 80Hz (configurable) to the sub, thus lifting the load off the receiver and also does not stress the speakers as they are now not playing the lower frequencies. This will make the speaker sound cleaner and clearer.Received the amp and set it up with Pioneer FS52s. Currently using the SA Phoenix BT Adapter as could not order the WXC50 for the lockdown shipping issues at the dealer.
This is my first experience with an Integrated amp, hence I have nothing to compare, except with my previous AVR.
Out of the box - really impressed. Immediately can perceive the effortless openness of the vocals, the subtle smoothness of high frequency as I have read numerous times about the marantz. What dear FMs were saying was true. With proper amp, speakers do sing. I had no idea my FS52s had bass, because with AVR, set as Small and 80hz Crossover, bass in them was nonexistent. But with pm6007, I can somewhat manage these towers with whatever bass they are outputting now, without using a subwoofer. I guess, amps need burn-in time and I have heard they need 50 hrs to ideally open up. I will update once I achieve 50hrs burn in time.
Doubts - I have read pm5000/6000 series are suitable for bookshelf speakers, especially 2 way speakers, and with complex crossovers of 3way tower speakers, they won't perform optimally. Since, I am currently using them with Pioneer FS52s, which are power hungry as people say, the sound does not seem right. Loudness is not an issue as the volume on amp is around 9/10 position, it is still loud enough for my room. What I feel is, the silent part in tracks are not properly audible, when the normal part begins it is suddenly loud, and the loud part is like really loud. What I meant is the transition between low-high-mid frequency is not smooth or subtle. If the song is - let's say 'Casandra Wilson's Don't Explain' when it begins or being built up, I can't hear much but once the rhythm kicks in "bang". I observe this in mid way of tracks as well. I don't know it is a problem with the source, or burn-in, or my multi-driver-ed low sensitive power hungry towers. I tried to read and some says these amps may be not handling the multi crossovers of tower speakers properly, which is causing the uncontrollable output. I can assure such problem was not there when I was driving these towers with the AVR.
I am unable to integrate my wharfedale d10 sub with the amp. it has low-pass filter from 40-150. Pioneer has frequency range of 40 Hz-20 kHz
What should be the lowpass setting on the subwoofer?
Are two-way speakers really easy to drive ?
With a stereo amp like Marantz, you will be giving the speakers full range which might make some speakers sound muddled. You could try pulling them away from the wall to see if the sound clears up or do some room treatments. On the sub, you could set the crossover in the range of 60 to 80 Hz. I would prefer 60.
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